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arXiv · 2006.03070

Quantum computer-aided design: digital quantum simulation of quantum processors

Thi Ha Kyaw·Tim Menke·Sukin Sim·Abhinav Anand·Nicolas P. D. Sawaya·William D. Oliver·Gian Giacomo Guerreschi·Alán Aspuru-Guzik
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Abstract

With the increasing size of quantum processors, sub-modules that constitute the processor hardware will become too large to accurately simulate on a classical computer. Therefore, one would soon have to fabricate and test each new design primitive and parameter choice in time-consuming coordination between design, fabrication, and experimental validation. Here we show how one can design and test the performance of next-generation quantum hardware -- by using existing quantum computers. Focusing on superconducting transmon processors as a prominent hardware platform, we compute the static and dynamic properties of individual and coupled transmons. We show how the energy spectra of transmons can be obtained by variational hybrid quantum-classical algorithms that are well-suited for near-term noisy quantum computers. In addition, single- and two-qubit gate simulations are demonstrated via Suzuki-Trotter decomposition. Our methods pave a promising way towards designing candidate quantum processors when the demands of calculating sub-module properties exceed the capabilities of classical computing resources.

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Thi Ha Kyaw, Tim Menke, Sukin Sim, Abhinav Anand, Nicolas P. D. Sawaya, William D. Oliver, Gian Giacomo Guerreschi, Alán Aspuru-Guzik. 2020-06-04. Quantum computer-aided design: digital quantum simulation of quantum processors. https://doi.org/10.1103/physrevapplied.16.044042

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